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  <title>Construct a directory using glob</title>
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    <li>Construct a directory using glob</li>
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  <div id="layout-content"><div id="globiterator.construct" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">GlobIterator::__construct</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.3.0, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">GlobIterator::__construct</span> &mdash; <span class="dc-title">Construct a directory using glob</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-globiterator.construct-description">
  <h3 class="title">说明</h3>
  <div class="constructorsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>GlobIterator::__construct</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$pattern</code></span>, <span class="methodparam"><span class="type">int</span> <code class="parameter">$flags</code><span class="initializer"> = FilesystemIterator::KEY_AS_PATHNAME | FilesystemIterator::CURRENT_AS_FILEINFO</span></span>)</div>

  <p class="para rdfs-comment">
   Constructs a new directory iterator from a glob expression.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-globiterator.construct-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">pattern</code></dt>

     <dd>

      <p class="para">
       A <span class="function"><a href="function.glob.html" class="function">glob()</a></span> pattern.
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">flags</code></dt>

     <dd>

      <p class="para">
       Option flags, the flags may be a bitmask of the 
       <span class="classname"><a href="class.filesystemiterator.html" class="classname">FilesystemIterator</a></span> constants.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 errors" id="refsect1-globiterator.construct-errors">
  <h3 class="title">错误／异常</h3>
  <p class="para">
   Throws an <span class="classname"><a href="class.unexpectedvalueexception.html" class="classname">UnexpectedValueException</a></span>
   if the <code class="parameter">directory</code> does not exist.
  </p>
  <p class="para">
   Throws a <span class="classname"><a href="class.valueerror.html" class="classname">ValueError</a></span>
   if the <code class="parameter">directory</code> is an empty string.
  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-globiterator.construct-changelog">
  <h3 class="title">更新日志</h3>
  <p class="para">
   <table class="doctable informaltable">
    
     <thead>
      <tr>
       <th>版本</th>
       <th>说明</th>
      </tr>

     </thead>

     <tbody class="tbody">
      <tr>
       <td>8.0.0</td>
       <td>
        Now throws a <span class="classname"><a href="class.valueerror.html" class="classname">ValueError</a></span> if
        <code class="parameter">directory</code> is an empty string;
        previously it threw a <span class="classname"><a href="class.runtimeexception.html" class="classname">RuntimeException</a></span>.
       </td>
      </tr>

     </tbody>
    
   </table>

  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-globiterator.construct-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-3626">
    <p><strong>示例 #1 <span class="classname"><a href="class.globiterator.html" class="classname">GlobIterator</a></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$iterator&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">GlobIterator</span><span style="color: #007700">(</span><span style="color: #DD0000">'*.dll'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">FilesystemIterator</span><span style="color: #007700">::</span><span style="color: #0000BB">KEY_AS_FILENAME</span><span style="color: #007700">);<br /><br />if&nbsp;(!</span><span style="color: #0000BB">$iterator</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">count</span><span style="color: #007700">())&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">'No&nbsp;matches'</span><span style="color: #007700">;<br />}&nbsp;else&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$n&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">;<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Matched&nbsp;%d&nbsp;item(s)\r\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$iterator</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">count</span><span style="color: #007700">());<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;foreach&nbsp;(</span><span style="color: #0000BB">$iterator&nbsp;</span><span style="color: #007700">as&nbsp;</span><span style="color: #0000BB">$item</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"[%d]&nbsp;%s\r\n"</span><span style="color: #007700">,&nbsp;++</span><span style="color: #0000BB">$n</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$iterator</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">key</span><span style="color: #007700">());<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />}<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程的输出类似于：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
Matched 2 item(s)
[1] php5ts.dll
[2] php_gd2.dll
</pre></div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-globiterator.construct-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="methodname"><a href="directoryiterator.construct.html" class="methodname" rel="rdfs-seeAlso">DirectoryIterator::__construct()</a> - Constructs a new directory iterator from a path</span></li>
    <li class="member"><span class="methodname"><a href="globiterator.count.html" class="methodname" rel="rdfs-seeAlso">GlobIterator::count()</a> - Get the number of directories and files</span></li>
    <li class="member"><span class="function"><a href="function.glob.html" class="function" rel="rdfs-seeAlso">glob()</a> - 寻找与模式匹配的文件路径</span></li>
   </ul>
  </p>
 </div>


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